Analysis of Unidirectional Absorption in a Defective Superconducting Photonic Crystal

Tsung Wen Chang, Chih Hsi Huang, Da Jun Hou, Chien Jang Wu, De Xin Chen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Terahertz unidirectional resonant absorption in a finite one-dimensional defective superconducting photonic crystal is theoretically investigated. We consider an asymmetric photonic crystal (AB)ND(BA) M, where A is a dielectric, B is a superconductor, D is the dielectric defect, and N, M are the stack numbers, respectively. At N ≠ M, it is found that the resonant absorption for the structure exhibits the unidirectional property. The unidirectional resonant absorption points increase as the difference between N and M increases. We also investigate the unidirectional property as a function of angle of incidence. The results show that the unidirectional absorption is nearly independent of the polarization at a given angle of incidence. The proposed structure can be used to design a polarization-independent optical device which may be technically used in superconducting photonics.

Original languageEnglish
Article number7954601
JournalIEEE Photonics Journal
Volume9
Issue number4
DOIs
Publication statusPublished - 2017 Aug 1

Keywords

  • Photonic crystal
  • superconductor
  • unidirectional absorption

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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